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Water Body Type

Water Body Type

Wetlands along the Grande Ronde River, OregonThere are many terminologies for water bodies. In general, brooks, streams, and creeks are similar terms. A river is a stream of water of considerable volume, which travels downhill (from higher altitudes to lower altitudes due to gravity). Rainfall will seep into the ground or become runoff, which flows downhill into rivers. Typically, creeks and brooks are smaller than streams while rivers are much larger than streams and other flowing water sources. Little creeks or streams merge to form small rivers then become medium-sized rivers. These rivers may be tributaries of a large river which can eventually flow into the ocean. This interconnection between streams and rivers form watersheds.
Mid-Atlantic Integrated Assessment (MAIA) http://www.epa.gov/maia/index.html

Water Quality Research Database

Estuary

A place where fresh and salt water mix, such as a bay, salt marsh, or where a river enters an ocean.
National Estuary Program http://www.epa.gov/owow/estuaries/

Ground Water

The supply of fresh water found beneath the earth's surface, usually in aquifers, which supply wells and springs. Because groundwater is a major source of drinking water, there is growing concern over contamination from leaching agricultural or industrial pollutants and leaking underground storage tanks. The subsurface water that occurs beneath the water table in soils and geologic formations that are fully saturated (Groundwater, Freeze and Cherry, 1979).
http://www.epa.gov/ada/

Lake

A considerable body of inland water or an expanded part of a river.
Clean Lakes (http://www.epa.gov/owow/lakes/index.html)
Great Lakes National Program Office (http://www.epa.gov/grtlakes/)
U.S. EPA Great Lakes Program (http://www.epa.gov/glnpo/)
The Great Lakes: An Environmental Atlas and Resource Book (3rd ed.) http://www.epa.gov/glnpo/atlas/intro.html

Ocean

The body of salt water which covers nearly three fourths of the surface of the globe. The water, whose composition is fairly constant, contains on the average 3½ percent of dissolved salts; of this solid portion, common salt forms about 78 percent, magnesium salts 15–16 percent, calcium salts 4 percent, with smaller amounts of various other substances. The density of ocean water is about 1.026 (relative to distilled water, or pure H2O). The ocean bottom is a generally level or gently undulating plain, covered with a fine red or gray clay, or, in certain regions, with ooze of organic origin.
http://www.epa.gov/OWOW/oceans/index.html
http://www.epa.gov/adopt/


Receiving Water

Creeks, streams, rivers, lakes, estuaries, groundwater formations, or other bodies of water into which surface water and/or treated or untreated waste are discharged, either naturally or in man-made sytems.

Reservoir/Supply

A reservoir can be any natural or artificial holding area used to store,regulate, or control water.

River

A natural stream of water of considerable volume, larger than a brook or creek.
American Heritage Rivers (http://www.epa.gov/rivers/)

Stream

A body of flowing water; natural water course containing water at least part of the year. In hydrology, it is generally applied to the water flowing in a natural channel as distinct from a canal.

Wetland

An area that is saturated by surface water or groundwater with vegetation adapted for life under those soil conditions, as in swamps, bogs, fens, marshes, and estuaries.
Wetlands Homepage http://www.epa.gov/OWOW/wetlands/index.html
Wetlands Homepage America's Wetlands http://www.epa.gov/OWOW/wetlands/vital/toc.html

Office of Research & Development | National Risk Management Research Laboratory


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